h3
cratetorrent
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| h3 | cratetorrent | |
|---|---|---|
| 21 | 4 | |
| 4,588 | 450 | |
| 2.1% | - | |
| 7.1 | 0.0 | |
| 22 days ago | about 2 years ago | |
| C | Rust | |
| Apache License 2.0 | - |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
h3
- H3: Hexagonal hierarchical geospatial indexing system
- Evaluation of Location Encoding Systems
- Not sure if this is the worst or most genius indentation I've seen
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A population density map of the state of Pennsylvania
It looks like the base Kontur dataset uses H3 resolution 8, and there’s a lookup table here. “400m” seems to refer to the edge length (which averages to 461m).
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[ANN] HexTree: geographical region-to-value mapping
I can speak to quadtrees, but the primary reason for using this is that you need a geographic "dictionary" (not using the word map to avoid confusion with charts), and you're perhaps already using the H3 hexagonal grid system.
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What's everyone working on this week (34/2022)?
HexSet: is a way of storing a set of H3 cells in a tree, and doing fast (2-20 ns on my 2013 trashcan Mac Pro) membership tests. You must first convert the input data (e.g. GeoJSoN polygon) into H3 cells.
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Surprising result while transpiling C to Go
> What an amazing tool that can completely change function names when it converts from C to Go.
How can one read the code of the benchmark, then switch into virulent sarcasm mode without trying to understand the code? And seeing "+1" comments without any effort to understand is also disheartening.
The blog post had a link about the Go helper functions the author used. It lands on https://github.com/akhenakh/goh3/blob/main/h3.go This shows that the `FromGeo()` function used by the Go benchmark is a helper that calls transpiled functions. The benchmark code itself was of course not transpiled, so the sarcasm was unneeded and wrong.
If anyone wants to dig in deeper, the C function `latLngToCell()` calls 2 functions, see https://github.com/uber/h3/blob/master/src/h3lib/lib/h3Index...
- Completely ignorant Newbie needing help with launching Ubers H3 Software.
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Anyone doing geospatial queries? NoSQL? Amazon Location Service?
Uber just released their library to perform geospatial indexing - https://h3geo.org/. This might be an useful building block for you.
cratetorrent
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Planning to make a video on cool Rust apps focused on the end user. Make recommendations!
BitTorrent (v1) Library: Cratetorrent
- Rust Torrent CLI
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Ask HN: What Are You Working On?
A (toy) BitTorrent engine in Rust whenever I want to recharge a bit: https://github.com/mandreyel/cratetorrent.
The scope is small and well defined and so is a welcome break from having to divine murky business requirements, slow iteration speed with microservices, and other every day fatigue.
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I wrote cratetorrent, a BitTorrent engine in Rust!
Appreciate the comprehensive Design doc, which I really wish more libraries included.
What are some alternatives?
S2 geometry - S2 geometry library in Go
hypercore - Secure, distributed, append-only log
Leaflet - 🍃 JavaScript library for mobile-friendly interactive maps 🇺🇦
synapse - Synapse BitTorrent Daemon
mapbox-gl-js - Interactive, thoroughly customizable maps in the browser, powered by vector tiles and WebGL
ffprobe-wasm - A Web-based FFProbe. Powered by FFmpeg, Vue and Web Assembly!
starlink-coverage - Calculating some statistics about Starlink satellites
prolink-connect - A Typescript / JavaScript library that is able to talk to Pioneer PROLINK enabled DJ equipment
s2geometry - Computational geometry and spatial indexing on the sphere
rust-starter - Rust Starter Project
maplibre-gl-js - MapLibre GL JS - Interactive vector tile maps in WebGL2
atbswp - A minimalist macro recorder